Driven oscillation and resonance
A motor drives an oscillating wheel. If the motor hits exactly the right rhythm, the wheel swings especially strongly: resonance.
Physics – grade 13
Main phase, third and fourth half-year (here grade 13). LK = advanced course only. The numbers are those of the curriculum.
Unit 3.3Electromagnetic oscillations
The electromagnetic oscillating circuit with Thomson’s formula; LK: damping, forced oscillation and resonance.
Unit 3.4Electromagnetic waves
Generation and properties of electromagnetic waves.
No separate simulation is planned for this.
Unit 3.5Wave model of light
Diffraction and interference of light at a double slit and a grating.
Double slit and grating
Laser light passes through a double slit or a grating. A pattern of bright and dark stripes appears on the screen.
Interference of two circular waves
Two circular waves overlap: in some places they reinforce each other, in others they cancel out.
Unit 4Quanta and atoms
The photoelectric effect and the photon model, matter waves, probabilistic behaviour of quantum objects, emission and absorption, the quantum model of the atom; LK: X-rays, the uncertainty relation, the potential well.
Photoelectric effect
Red light can be as bright as you like, it frees not a single electron. Short-wave light does it at once. A puzzle for waves, not for photons.
Electron diffraction
Electrons hit a thin layer of graphite and form rings on the screen, just like waves do.
Double slit and grating
Laser light passes through a double slit or a grating. A pattern of bright and dark stripes appears on the screen.
Atomic models and line spectra
Every element glows in its own colours. When an electron drops one level, exactly one line appears in the spectrum.
The summaries describe the curriculum in our own words. The original text is authoritative. Original text (German): Lehrplan, Gymnasium, Physics, grade 13